I need help:< for my chemistry class we have to write the equation at first it says "Expand the right side by multiplyig each term. that is... 5 x 27 = 135 and 5 x 3a = 15a

so i get "2a = 135 -15a i just want to know how i have to write the equation because i suck at Math i'm so bad at it. Pls gave me some help!!!